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An Improved Sodium Acetate Buffer Method for the Determination of Plant Available Phosphate and its Application to Irrigated Rocky Mountain Soils
Author(s) -
Brown R. J.,
Dahlberg H. W.
Publication year - 1938
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1938.036159950002000c0027x
Subject(s) - citation , sugar , soil water , sodium , horticulture , computer science , chemistry , mathematics , environmental science , library science , soil science , biology , food science , organic chemistry
The original sodium acetate buffer method for the determination of plant-available phosphate was presented before the American Society of Agronomy and published in its Journal in Vol. 84, No. 6, June 1932, pp. 460468. While the original method was more satisfactory than any other chemical method tried at that time, phosphate studies have been continued with the object of improving the method and gaining information which would aid in the interpretation of the results. During the course of this work various media have been employed for extraction of the soil, but none have been found which equal the acetate buffer for extraction of the calcareous soil, high in natural phosphate, almost universal, in the area under investigation. The material to be presented here covers a study of the relation between plantavailable phosphate and that phosphate extracted by the acetate buffer. Subjects studied are: